package com.oocl.task0724.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import org.apache.commons.dbcp.BasicDataSource;

public class DBUtil {
	private static final String CLASSNAME="oracle.jdbc.driver.OracleDriver";
	private static final String URL="jdbc:oracle:thin:@ITA-031-w7:1521:xe";
	private static final String USERNAME="zero";
	private static final String PSD="123";
	
	private static BasicDataSource ds;
	static{
		ds=new BasicDataSource();
		
		ds.setUrl(URL);
		ds.setDriverClassName(CLASSNAME);
		ds.setUsername(USERNAME);
		ds.setPassword(PSD);
	}
	
	public static Connection createConnectionWitDatasource(){
		Connection con=null;
		try {
			con=ds.getConnection();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return con;
	}
	
	public static Connection createConnection(){
		Connection con=null;
		try {
			Class.forName(CLASSNAME);
			con=DriverManager.getConnection(URL,USERNAME,PSD);
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			e.printStackTrace();
		}
		return con;
	}
	
	public static void close(Connection con,PreparedStatement pst,ResultSet rs){
		try {
			if(rs!=null){
				rs.close();
			}
			if(pst!=null){
				pst.close();
			}
			if(con!=null){
				con.close();
			}
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}
}
